Photo: Carol M. Highsmith · Public domainLiving in Seminole, TX: what to set up and who to call
The City of Seminole water system reported one health-based violation to EPA in the last five years: arsenic, beginning Jan 2022. Oncor delivers the power in Seminole, but in Texas’s open market you choose the company that sells it.
I’m new in town
What to set up in Seminole, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Seminole.
Power comes from Oncor
Oncor (Oncor Electric Delivery Co.), an investor-owned utility, serves all of Seminole.
Start or move service: oncor.com · (888) 875-6279
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Seminole water system
The City of Seminole water system supplies almost all of Seminole. It draws ground water (EPA lists Metro Water Systems as seller) and serves 7,386 people in all.
1 health-based violation reported to EPA in the five years to October 2026: arsenic, beginning Jan 2022. 80% of the 5,012 systems serving 3,301–10,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2026–Dec 2028, was 2.3 ppb, below the 15 ppb action level that applied. The highest in five years was 5.3 ppb. That’s higher than 75% of similar systems’ latest results.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. TX0830012.
7 home internet providers serve Seminole
100% of 2,754 addresses can get 100/20 Mbps; 91% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Poka Lambro Telecommunications | Cable | 100% | 1,000/30 |
| Optimum | Fiber | 92% | 940/940 |
| AT&T | Fixed wireless, DSL | 13% | 100/20 |
| Uber Wireless LLP | Fixed wireless | 100% | 450/60 |
| Zion Broadband | Fixed wireless | 100% | 300/75 |
| Verizon | Fixed wireless | 78% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Seminole’s trash rules yet
Pickup rules, the dump and recycling in Seminole.
Where your child goes to school
Public school districts and the school path by grade.
Seminole is in Seminole Independent School District.
B+School gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Seminole is in ZIP code 79360
ZIP codes where Seminole residents live, with the share of the town in each.
| ZIP | Post office name | Share of Seminole | ZIP’s residents in Seminole |
|---|---|---|---|
| 79360 | Seminole, TX | 100% | 39% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Seminole
Who supplies Seminole’s drinking water, and has it had violations?
The City of Seminole water system (EPA ID TX0830012). It reported 1 health-based violation to EPA in the five years to October 2026: arsenic. 80% of systems its size had none. Its latest lead 90th percentile was 2.3 ppb (Jan 2026–Dec 2028), against a 15 ppb action level.
Who provides electricity in Seminole?
Oncor (Oncor Electric Delivery Co.), an investor-owned utility.
What internet providers serve Seminole?
Poka Lambro Telecommunications, Optimum, AT&T, Uber Wireless LLP, Zion Broadband, Verizon (FCC, as of December 2025).
What ZIP codes are in Seminole?
79360. Census 2020 ZIP Code Tabulation Areas.
What school district is Seminole in?
Seminole Independent School District.
How do I register to vote in Seminole?
Texas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Gaines County Early Voting Clerk. Check your registration at teamrv-mvp.sos.texas.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.